A. Auge, A. Weddemann, F. Wittbracht, B. Vogel, and A. Hütten
Department of Physics, Thin Films and Physics of Nanostructures, Bielefeld University, Bielefeld, Germany
The oxidation behavior of metallic nanoparticles is investigated in respect to material parameters like Mott potential, defects on the microstructure and oxide volume increase per ionic defect. An emphasis is laid on magnetic nanoparticles where the degree of oxidation can be measured via the reduction of the magnetic moment.
E. Lacatus, G. C. Alecu, A. Tudor, M. A. Sopronyi
Polytechnic University of Bucharest, Bucharest, Romania
Student-Polytechnic University of Bucharest, Bucharest, Romania
INFLPR -National Institute for Laser Plasma and Radiation Physics, Bucharest, Romania
Vibration and music therapies are non-invasive treatments having effective results although their basics are still disputed. By the application of COMSOL Multiphysics® software for modeling and analysis, some of the nonlinear physical phenomena laying on these applications may be clarified. Acoustic environmental stimuli at different intensities are continuously interacting with our bodies, ...
Rheological Behaviour of Single–Phase Non-Newtonian Polymer Solution in Complex Pore Geometry: A Simulation Approach
P. Idahosa, G. Oluyemi, R. Prabhu, B. Oyeneyin
IDEAS Research Institute/School of Engineering, Robert Gordon University, Aberdeen, United Kingdom.
School of Engineering, Robert Gordon University, Aberdeen, United Kingdom.
One of the most important criteria for evaluating chemical enhanced oil recovery (EOR) processes that use polymers is its rheological behaviour which in turn account for other physical effects of adsorption and resistance factors during polymer-rock interactions. However, complete knowledge of behaviour of polymer solution in porous media has not yet been fully gained. A computational fluid ...
C. Hollenstein, and A. Howling
Ecole Polytechnique Fédérale de Lausanne, Switzerland
Finite elements using COMSOL Multiphysics have been used to simulate the edge plasma in a large area capacitively coupled RF reactor. In order to reduce numerical difficulties simplified reactor edge geometries have been used. First results show the importance of electrostatic double layers within this plasma. In addition the non-uniform behaviour of the plasma sheath around convex and ...
A. Samba, N. Omar, H. Gualous, Y. Firouz, O. Capron, M. Abdel MonemO, J. Smekens, P. Van den Bossche, J. Van Mierlo
VUB ETEC, Brussel, Belgium and UCBN, LUSAC, Cherbourg, France
VUB ETEC, Brussel, Belgium
UCBN, LUSAC, Cherbourg, France
Multi-Scale and Multi-Dimensional (MSMD) modeling approaches have been proposed to simulate the thermal, electrical distributions and concentration behaviors of large size pouch cell. This approach is based on coupling of the energy balance with the Newman’s electrode model. Newman’s 1D electrochemical model is often used for small size batteries but not sufficient enough for large size where ...
INP Greifswald e.V., Greifswald, Germany
2D self-consistent nonequilibrium model of a free-burning arc in argon has been developed. The model is based on the COMSOL Multiphysics® platform and describes in a self-consistent manner the fluid dynamics, the heat transfer, the magneto-electrodynamics, and species conservation. The governing equations are solved applying the COMSOL Multiphysics® interfaces Laminar flow, Electric Currents, ...
Numerical Modeling of Sampling Airborne Radioactive Particles Methods from the Stacks of Nuclear Facilities in Compliance with ISO 2889 - new
Sogin Spa, Rome, Italy
The main objective of this study is to verify the compliance of an ongoing nuclear facilities stack design with the ISO 2889 requirements, during normal and off-normal conditions. In particular, with the numerical simulations, they have been identify well-mixed sample locations along the chimney and the compliance with the International Standard requirements as result of stack flow rate and ...
E. S. Tschoepke, J. A. E. Mazzaferro, G. Paz
Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
Introduction: The main objective of the present work consists in modeling an arc welding heat source to allow predict peak temperature and cooling rate at specific points. The filler metal was deposited on a plate of 32mm thick with no chamfer, in bead on plate configuration, using five different preheat temperatures: -30°C, 30°C, 100°C, 150°C and 200°C. Use of COMSOL Multiphysics® software: ...
An Analysis of Spin-Diffusion Dominated Ferrofluid Spin-Up Flows in Uniform Rotating Magnetic Fields
S. Khushrushahi, A. Guerrero, C. Rinaldi, and M. Zahn
Massachusetts Institute of Technology, Cambridge, MA
Univeridad Industrial de Santander, Bucaramanga, Colombia
University of Puerto Rico, Mayaguez, Mayaguez, PR
This work analyzes the spin-diffusion dominated explanation for spin-up bulk flows in ferrofluid filled cylinders, with no free surface, subjected to a uniform rotating magnetic field. COMSOL results are compared to experimental results and analytical results. Simulating ferrofluid spin-up flows have many subtleties, especially when using a single domain region to model the ferrofluid ...
3D Multiphysics Modeling of Bulk High-Temperature Superconductors for Use as Trapped Field Magnets - new
M. Ainslie, J. Zou, D. Hu, D. Cardwell
Department of Engineering, University of Cambridge, Cambridge, UK
The authors are currently investigating the use of bulk high temperature superconductors as trapped field magnets (TFMs) in order to increase the electrical and magnetic loading of an axial gap, trapped flux-type superconducting electric machine. In electric machines, the use of superconducting materials can lead to increases in efficiency, as well as power density, which results in reductions ...